UV sterilizers?

[nicksteele7]

So to clarify would you recommend the aqua 25w over the 57w? Is 25w good for a 180g? Thanks

 

[kendragon]

So to clarify would you recommend the aqua 25w over the 57w? Is 25w good for a 180g? Thanks

Analysis show a 25W unit will yield 49.04869mJ/cm^2. Is there any reason you would need more? This should cover most of the problems listed on the chart.
Notice that on the surface of the quartz sleeve the dosage is 50.54mJ/cm^2 and as you move to the wall of the unit it drops to 22.86mJ/cm^2. Good chambers will keep the water close as possible to the lamp and a full length sleeve from end to end is key! Doesn't allow any pathogens to hide while in the chamber without seeing the light.

View attachment 1.JPG

 

[squint]

I’ve heard good things about aquas. What hpoeens when they overheat/is it dangerous for the fish?

No, the ballast is outside the tank so it only hurts your wallet. I did get a free replacement the first time it happened.

You could get the NEMA ballast from the start that's not potted. The ballast can be replaced much more easily. It should last much longer since the cooling is much better.